Tests

feat!: new `ChatMessage` #15430

Job	Run time
format	15s
check-imports	19s
Unit / ubuntu-latest	3m 15s
Unit / windows-latest	4m 53s
Unit / macos-latest	2m 6s
Integration / ubuntu-latest	3m 20s
Integration / macos-latest	5m 6s
lint	2m 5s
Integration / windows-latest	6m 31s
Tests completed / Mark tests as completed	1s
	27m 51s

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